Rotary motor



Nov. 4. 1924.

E. J. MOORE ET Al.

ROTARY MOTOR Filed Oct. 18 1920 2 Sheets-Sheel 2 Z 1 ff; j/f

Patented Nov. '4, 1924.. i,

PArsur OFFICE.

EDWARD J'. MOORE AND RAYMOND H. MOORE, OF CLEVELAND, OHIO, ASSIGNORS T0 THE `ROTOE PNEUMATIC COMPANY, F CLEVELAND, OHIO, A. CORPORATON OF OHIO.

' ROTARY MOTOR..

Application lcd October 18, 1920. Serial No. 417,547,

To all wkomct may concern: Be it known that we, EDWARD J. MOORE and RAYMoND H; MOORE, citizens of the UnitedV ,-States, lresiding at Cleveland, in e the co-unty of Cuyahoga and State of Ohio,

have invented a certain new and useful lmprovement in Rotary Motors, of which-the following is a full, clear, and exact description, 'reference being had to the accomw panying drawings.

This invention relates to fluid pressure motors of the rotary type. and has for its general object to improve the operation and y eiiiciency of such motors. Further and more limited objects of the invention will appear hereinafter and will be realized in and through the 'combinations of elements embodied in the rclaims forming part hereof.

ln the drawings, Fig. 1 represents a lon- 2@ gitudinal sectional view through a motor constructed in accordance with our invention, the said view corresponding to the line 1 1 of Fig. 3; Fig. 2 a similar -view corresponding to the line 1 2 of Fig. 3; Figs.

3, 4 and 5 are sectional details corresponding respectively to the lines 3 3, 4 4 and 5 5 of Fig. 1; Fig.y 6 a perspective view of one of the abutment members; Fi 7 asimilar view of a part of the lubricatlng mech' anism; and Fig.. 8 a detail in perspective of the throttle or ycontrolling valve. e

Describing the parts by reference charlacters -1 denotes the motor shaft, said shaft being mounted in a pair of heads indicated at 2 and 3, the head 2 being what is known to the prede as the dead head and the head 3.',the live head. Each head comprises al sleeve portion indicated at 4 and 5 respectively, the said sleeve portions being connected -with datl heads 6 and 7 v:respectively, which heads form the ends of the cylinder assembly. Each of these heads is ofthe general contour shown in Fig. 3. The

sleeve l is providedwith achamber'Stov 45 which lubricant may be supplied from a suitable receptacle, as a grease cup 8a; through a port 8b. This chamber is adapted to communicate hy a smaller port 9 with a section 10 in the head assembly'2 of the conduit through which the pressure duid is supplied to the cylinders. The shaft 1 is provided with a central bore 11 communicating at vone end with saidchamber and having rts 12 and 13 adapted to conduct lubricant ce trom'the chamber 8 to the 'working parts of- .to the conduit section 10 may he gradually the motor, toV bereferred to hereinafter. rlhe operating end of. the shaft 1 maybe provided with any suitable tool, a grinding Wheel -14being shown as secured to such, shaft end by means of nuts 15 and 16.

rlhe dead head of the motor is provided with a bore comprising an internally threaded portion 17, a cylindrical portion 18 adapted to communicate with the conduit section 10 through a port 19, and a reduced cylindrical portion 20. Rotatably mounted within the cylindrical chamber formedat 18 is a valve comprising a cylindrical cup 21 which is open toward the threaded section 17 of the bore, the opposite end of the cup being closed and `adapted to abutagainst 18 and 20. From the closed end of the cup 21 there projects a cylindrical Istem 23 which nts withinjthe bore section 20said stem having kan opening 24 for the reception of a pin 25' carried by the operating arm 25. -A pipe connection 26, comprising a part or section of the conduit for the supply of pressure duid to the cylinders, is threaded into the bore section 17. Mounted on this pipe connection is a sleeve 27 and the arm 25 projects from 'the said sleeve.

. The cup 21 constitutes a throttle or controlling valve for regulating the volume of pressure Huid which may pass from the conduit 26 to the conduit section 10, the said valve being provided with a port 21a, whereby, by rotation of the valve in the ap ropriate direction, the supply oir pressure uid @il increased and diminished.

32 denotes a head, similar incontcur to the heads 6 and 7 and equidistant therefrom. This intermediate head is sleeved upon the shaft 1 and is provided with a port 33, preterably in alignment with the` delivery end of the supply passageway 161, and with a port 34 the purpose of which will he explained hereinafter. @n each side of the head or partition 32, the shaft 1 has mounted thereupon a rotary piston, indicated at 35 and 36, respectively, and arranged apart on saidshaft. Each of these rotary pistonsis shown as secured to the shaft hy means of a headed screw 37, 33, respectively', and entering recesses 39, 4:0, provided respectively therefor in each piston, each recess extending into its piston from the end which faces the intermediate wall ,or parti lion The. motel' shown herein is a two- 1m lll@ esl

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spectively. One of the cylinders is indicated' cylinder motor, but it will be understood that we do not propose to limit our invenf tion to any particular number of cylmders and pistons.

Each of the rotary pistons 1s mounted within a castingjcontainin a distributing chamber, a cylinder, a mu er chamber, and `a lubrlcatln chamber, as -shown in cross section in Fig. 3, each of these .castmgs being interposed between the intermediate head or partition 32 and the heads 6` and 7 reat 41, the axis of said cylinder coinciding with the axis of the shaft 1. Cast with each cylinder is a fluid-distributing chamber 42, the chamber at the right hand of Fig. 1 communicating with the supply passageway 10 and also with the distributing chamber of the next cylinder through a port 33.

The distributing chamber of each cylinder communicates with a cylinder port 44.

In addition to the chamber 42, each cylinder casting is provided witha mufller chamber at the opposite side thereof from the distributing chamber 42, each ufller chamber being provided with a plurality of exhaust outlets 46 in the bottom thereof and .providing anenlarged expansion chamber .for the exhaust fluid received from its corresponding cylinder. In a motor of aboutthe 1 mensionsshown in Fig. 3 of the drawings,

twosuch exhaustou'tlets will be provided for each inuiller chamber, each outlet being about saidA port establishing communication between both mulier chambers.

Withl the parts of the dimensions shown in Fig." 3'v of drawing hereof, this port will be about in. diameter.

v Each rotary piston 35, 36, is provided:

with an external. cylindrical surface described from the'axis a and which is'of such extent as simultaneously to seal the inlet ,port 44 andthe exhaust port47 of such cyl inder. From each side of this surface, shown in Fig. 3 as comprehended between the radii aband ac, the outer surface of each piston is a cylindrical surface described about the oint'd as the center, the points a 'and'd belng about IAE 1n. apart where the parts are of the dimensions shown in Fig. 3 of the drawing. This .willy prevent the air (or other pressure fluid) admitted tothe chambers 42 from blowing backwardly around the rotor and through the exhaust port 47 when the parts are in the position shown in Fig. 3. Assuming that the pistons are turning from right to left, it will be seen that the inlets port wlll be closed until the point c on each .rotor passes the movable abutment, which l will no w be described.

In order to distribute vthe pressure fluid in operative relation to each piston, each cylinder is provided with an abutment comprising a plurality of narrow blades or laminations 48, each having its lower end rounded, as shown at 48a, the said laminations being .mounted in guides 49 provided in the heads 6 and 7, the intermediate partition32, and between a pair of webs, which will now be described.

One of said webs, 50,. forms one of .the walls of each chamber 42 and is provided with the port 44. The other web 5l is par? allel with the web 50 and forms a backing 4 .for its abutment. Each abutment, consisting of a plurality of. blades or laminations 48, is thus mounted between the webs 50 and 51 and between one of the heads'6 or 7 andthe intermediate head or partition 32. The ports 44`extend upwardly from their respective cylinders a distancesuiicient to y'enable the tops of their respective abutments to be subjectedto the pressure of the ventering Huid throughout the major portion of the rotation i' of each-piston, the fluid thus assisting in holding the abutmentsin contact with their .respective rotors or pistons and serving to cushion the said abutment as it passesabove such port.

For the purpose of eiliciently lubricating the blades or laminations .of each abutment,-

the interior of each cylinder, and the bearings provided between-the ends of each cylinder and the heads 6 and v7 and the intermediate head orpartition 32, we have pro- Above vided the following construction. each cylinder and between the headI 6 or -7 andthe intermediate head or partition 32, a chamber 52 is formed, said chamber heilig provided by the web 51, a web 53 and a bot-v l tom web 54: Eachichamber is provided with l -an opening 55for the supply of. oil thereto sald opening being provided with a plug 56.

In each chamber 52 is a wick 57 of ca illary material, such as woven felt. Each w1ck extends beneath Athe the top of eachl casing section and across the tops o f the webs 50 and 51,- bearing against said casing and against a cap plate -58 resting on top-of said webs v and .having downturned flanges 59 for centering and supporting the ysame upon said webs. Each pf these cap plates is provided with a plurahty of 'apertures 60, located centrallythereof and above the central portion l 0feach abutment,

assembled byfirst The motor may bel placing the intermediate wall in its propel` position upon the shaft 1. The rotary pistons will then be slipped over the respective ends `of the shafts with their recesses 39 and 40 receiving the heads of the key screws 37 and 38, respect1vely. The 'casting section A having therein their .respective abutments and wicking will then be slipped over theirv respective pistons. The live and the dead head will then be applied to the shaft,` and housing is yieldingly closed by its cap plate will also be closed by lsaid heads, with the exception of the port 33 in the intermediate head.

`The parts of the heads'6 and 7 which Vare provided with .the guides f 49 and the walls or webs 50 and 51 form housings Y*for the abutmen-ts, which 'housingsare open at their inner ends to permit contact between the inner ends-of the abutments and their respective rotors. The outer vend of each 59, except for'the small holes 60; and the escapeof the fluid pocketed between the top of each port 44 and its plate 59 is cut down by the ca illary material 57.

With t e parts constructedand arranged as described, the operation will be as fol- 30 lows: The valve 2l will be operated by means of thehandle 27 to -establish'communication between the fluid pressure lsupply connection 26 and the passageway 10. The pressure Huid entering said passageway is supplied to both chambers 42 and through the ports'44 to the vtwo cylinders of the `motor. As each piston rotates, the abutments are pressed upwardly into .contact with their common cap plate 58, compressing the wick thereabove and forcing a small quantity of oil. there from vand through the openings 60, which oil,'being caught by the4 compressed air supplied through the port 33 and flowing through the said openings when the abutments -move away from the plate,-

will he discharged in the form of a mist on Ithrough the port 44 and into the parts with. which such port communicates, lubricating..

" l. 'es

topfof the laminations or blades of each abutment. i Owing to a slight relative movement between these bladestheoil thus 'supplied will be *distributed between the,

same. Furthermore, someoil will be discharged as a misty from the'end ofthe wick,l

which opensinto the chamberV 42 by means 'of the compressed air supplied through the port 33 and will be carried by such lair not only'the bearings formed between the ends of each piston and their cooperating heads or partitionsbut also the inner sur# faces of the cylinders. Additional lubricant for the sidesof the pistons adjacent to the head or partition 32 willV be supplied from the chamber 8,l duct 11 and yports 12 'and' 13. The shaftplg is .further lubricated lchambers by the ports 46. This is to yfrom a chamber 62 located in the handle 5.

The cap plates 584 are looselyapplied to the outer ends of the walls 50 and'51, being f yieldingly retained in position by the capillary material 5'7. This yielding movability of the cap plates permits them to withstand the impact of the blades 48 for a.- long period ottime; and the eiciency and durability of the cap plates are enhanced by the provision of the yielding backing afforded by the yfelt. or other wicking 57.

' Reference has been. made heretofre'to the restricted outlet Iprovided for .the mufile'r revent the possibility of breaking the grinding wheel" 14 by operating the same under full pressure when lifted from the' work by gthe handles 5 and 27. '.lVith the muiiler exhaust ports/arranged as described.' and of vapproximately the size shown and described,

when the 'shaft 1 has attained a speed of about 4,000 R. P. M., a back pressure will be developed within'the muffler chambers which will prevent the `racing of the motor mate-A rially above the speed mentioned andv will thus prevent the bursting of the grinding Wheel through centrifugal action.

As the abutmentmovesfoutwardly and passes the outer end of the port 44, some of the pressure Huid is trapped between'the outer end of the abutment and the plate 58 and, escaping -slowly`through the open ings 6() andv the lwicking 57, serves as a dash pot to check -and. cushion the blows of the abutment 'against the said` plate4 and the wicking.

Having thus described our invention, what we claim is: i

1. In a rotary motor, the combination of a cylinder having an inlet connection' and an exhaust connection, a rotor in said cylinder,

a housing inter .osed between the inlet and l exhaust oonnectlons, and a laminated abutment slidably mounted in said housing and adapted to engage said ,rotor and to be reciprocated thereby, said housing having a port 'communicating with the inlet connection and adapted to admit pressure fluid to the outer end of said abutment when the latter is in its inward position and to be' covered by said abutment when the latter is'near its outward position, whereby the said abutment is held in engagement with therotor andits movement toward the outer end of the' housing is cushioned, said housing having a restricted opening in its outer end and a capillary medium adapted to conduct lubricant across said opening and to deliver the same to the inlet connection.

2. In a rotary motor, the'combin'ati'on of a cylinder having an -inlet connection and an exhaust connection, rotor in said cylinder,

"afmovable abutment interposed between saidv connections and adapted to contact with the rotor, and means operated by the movement of said abutment for supplying lubricant to the inlet connection.

3. In a rotary motor, the combination of a cylinder having an inlet connection and an exhaust connection, a rotor in said cylinder,

ya movable abutment interposed between said '15 the rotor and comprising a plurality of relatively movable members arranged side byI 4 side, 'said motor having la receptacle for lubricant, and capillary material extending,

from said receptacle across the ends of said members and arranged to be compressed thereby, f' v 5. In a rotary motor, the combination of l a cylinder having an inlet connection,` and an` outlet connection a rotor in said cylinder, a movable abutment adapted to contact with the rotor, said motor having a receptacle :for lubricant, and capillary material extending from said receptacle yacross the end of sai abutment which is vremote from said rotor.

6. In a rotary motor, the combination of a cylinder having an inlet and outlet con-i nection, a rotor 1n said abutment interposed between the said`- con# nections andy adapted to contact with said rotor, guides for said abutment, a receptacle 'i '-,forlubricant in said motor, and a wickY extending from said receptacle across the outer end of said abutment and in operative relatibn to said inlet connection` and to said guides.'4

7. In a rotary motor, the combination of a cylinder having an inlet and an outlet con-v ment, and means or distributin nection, a rotor in said cylinder, an abutment comprising aplurality of relatively movable members arranged side by side and interposedbetween said connections, a wick for supplying lubricant' in operative relation to the outer ends of themembers of said abutlubricant from saidwick tothe memberso said abutment.

8. In a rotary motor, the combination of a cylinder having an inletand an outlet connection, a rotor in said' cylinder, inter osed between the said connections, a movable abutment mounted insaid ideways ,and adapted to contact with said rotor, a distributing plate arranged tobe enaged by the outer end of said abutment and aving o enings therein,.a wick extending across sai plate in position to be compresse thereb through the outward movementof said-a utment, and a source of lubricant Supply `ttor said.' wick.

9' a mtl'y motor, the combination of cylinder a movable acylinder having `an inlet and an outlet connection, a rotor in said cylinder, guideways interposed between the said connections, a movable abutment mounted in said gu1deways and adapted to contact with said rotor, la wick extending across said abutment in position to be compressed thereby through the outward movement of said abutment and to discharge lubricant into said inlet connection, and a source of llubricant supply for said wick. f i

10. In a rotary motor, the combinationoi a cylinder having an inlet andlan outlet connection, a rotor in said. cylinder, a pair of webs interposed between said connections,

an abutment mounted between said webs andl adapted to contact with said rotor, a distributing plate mounted on said webs and having one or more apertures therethrough, awick extending above said plate and arranged to be compressed thereby through the movement of said abutment between .said

webs, the said wick being. adapted` to deliver lubricant into the inlet connection, and a source of'lubricant supply for saidwick.

11. In a rotary motor, the combination of a cylinderhaving an inlet and an outlet connection, a rotor in said cylinder, 'a pair of webs interposed between said connections, an abutment comprising 'a plurality of rela- 'tively movable ,members mounted between said webs and adapted to contact with said rotor, a distributing platez mounted on said webs andhaving one or more apertures therethrough, a wick extending above said late and arranged to be compressed thereythrough the movement of said abutment members, the said wick being adapted to deliver lubricant into the inlet connection,l

and a source of lubricant supply for said wick. 4 l i i i 1 2. In a rotary motor, the combination of a cylinder having an inlet connection andan outlet connection, a rotor in said cylinder, ,an abutment interposed between said connections and movable toward and from the axis of said rotor, and a guideway for said abutment having" in the wall thereof and within the outer end/thereof a port for supplying lpressure iiuid from said inlet connect1on' to said cylinder, and,

means restricting the4 outer end of said guidewaythereby to cause compression of the` operating fluid by said abutment as' it approaches the'outer 'end ofits stroke.

13. In a rotary. motor', the combination' vo a cylinder having an inlet connection and an' outlet connection, a rotor in said cylinder, lan abutment 1nterposed between said connections and movable toward and fromthe axis of said rotor, a compressible lubricant container arranged in operative relation to the outer end of said abutment, and means forl cushioning the outward movement of said abutment, f

atraco? 14. In a rotary motor, the combination of a cylinder having an inlet connection and an outlet connection, a rotor in said cylinder, a housing interposed between said inlet. and outlet connections and having a yieldable Wall at its outer end, and an abutment slidably mounted in said housing and adapted to engage said rotor` with its inner end and to contact With said yieldable Wall with its outer end.

15. ln avrotary motor, the combination of a cylinder having an inlet connection and an outlet connection, a rotor in said cylinder, a housing interposed between said inlet and outlet connections and having a movable Wall at its outer` end, a yieldable backing for said movable Wall, and an abutment slidably mounted in said housing and adapted to engage said rotor with its inner end and to Contact With said movable Wall with its outer end.

16. ln a rotary motor, the combination of a cylinder having an inlet connection and an outlet connection, a rotor in said cylinder, a housing interposed between said inlet and outlet connections and having a movable wally at itsI outer end, a pad of yieldable material interposed between said movable Wall and the cylinder Wall adjoint thereto, and an abutment slidably mounted in said housin` and adapted to engage said rotor with its inner end and to contact with said movable wall with its outer end.

v 17. ln a rotary motor, the combination of a. cylinder having an inlet connection and an outlet connection, a rotor in said cylinder, a housing interposed between said inlet and outlet connections, a cap plate yieldably applied to the outerend ont said housing, a laminated abutment in said housing adapted to engage the said rotor with the inner ends of the members thereof and the cap plate With the outer ends of the members thereof, and a yieldable backing for said cap plate.

lln testimony whereof, We hereunto afiix our signatures.

EDWARD J. MOORE. RAND H. MUORE. 

